diff --git a/Dockerfile b/Dockerfile
index 45ed7dad..709a1944 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,8 +19,8 @@ ENV RAILS_ENV="production" \
     RUBY_YJIT_ENABLE="1"
 
 RUN set -eux; \
-    gem update --system "3.4.22" ; \
-    gem install bundler --version "2.4.22" --force ; \
+    gem update --system "3.5.1" ; \
+    gem install bundler --version "2.5.1" --force ; \
     gem --version ; \
     bundle --version
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 70786994..acf650fa 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -344,4 +344,4 @@ RUBY VERSION
    ruby 3.2.2p53
 
 BUNDLED WITH
-   2.4.22
+   2.5.1